The Future of Enterprise Applications is Serverless Jarkko Hirvonen, Manager, Solutions Architecture, AWS Nordics In 2014 AWS introduced serverless computing with AWS Lambda. Since then, serverless has become one of the hottest topics in the industry. What is serverless, and what are the key trends and architecture patterns you should be aware of? Witness how AWS does it.

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Jarkko Hirvonen, Mgr Solutions Architecture, AWS
Future of Enterprise
Applications is Serverless

2. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Aboutme:
Jarkko Hirvonen
jarkkoh@amazon.com, @jarkkohi
Mgr, Solutions Architecture, AWS Nordics, 2016 
Previously:
Chief Architect, Sanoma Group, 2014 - 2015
Digital Architectures, Sanoma Finland, 2008 - 2014
Web & Digital Development, Capgemini, 2003 - 2008
Developer, SysAdmin, Support, 1999 - 2003

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https://secure.flickr.com/photos/mgifford/4525333972

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DevelopmenttransformationatAmazon:
1994-2001 2002+
Monolithic architecture +
hierarchical organization
Decoupled services +
Two-pizza teams

5. Two-pizzateam responsibilityVenn diagram
Responsible for
THEIR
PRODUCT
Deployment tools
CI/CD tools
Monitoring tools
Metrics tool
Logging tools
APM tools
Infrastructure provisioning
tools
Security tools
Database management
tools
Testing tools
….
Not responsible for
*
*Unless their product belongs in the blue

6. Two-pizzateam responsibilityVenn diagram
Responsible for Not responsible for
*
NOT
THEIR
PRODUCT
*Unless their product belongs in the blue
Application development
Infrastructure management
Application configuration
Pipeline configuration
Alarms
Runbooks
Testing
Compliance
Roadmap tracking
Goals tracking
On-call
Support escalation
….

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Two-pizzateam responsibilityVenn diagram
Responsible for
THEIR
PRODUCT
Not responsible for
NOT
THEIR
PRODUCT
Can we shift more from a
team’s responsibility to the
platform / shared services?

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Serverlessmeans …
No servers to provision
or manage
Scales with usage
Never pay for idle Availability and fault
tolerance built in

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Serverlessmeans:
Greater agility
Less overhead
Better focus
Increased scale
More flexibility
Faster time to market

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Serverlessapplications
Services (anything)
Changes in
data state
Requests to
endpoints
Changes in
resource state
Event source Function
Node.js
Python
Java
C#
Go
Ruby (NEW)
Bring your own runtime (NEW)

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Anatomyofa Lambda function
Handler() function
Function to be executed
upon invocation
Event object
Data sent during
Lambda function
Invocation
Context object
Methods available to
interact with runtime
information (request ID,
log group, etc.)
public String handleRequest(Book book, Context context) {
saveBook(book);
return book.getName() + " saved!";
}

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Fine-grainedpricing
Buy compute time in 100ms
increments
Low request charge
No hourly, daily, or monthly
minimums
No per-device fees
Never pay for idle
Free Tier
1M requests and 400,000 GBs of compute.
Every month, every customer.

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Common Lambda usecases
Web
applications
• Static
websites
• Complex web
apps
• Packages for
Flask and
Express
Data
processing
• Real time
• MapReduce
• Batch
Chatbots
• Powering
chatbot logic
Backends
• Apps &
services
• Mobile
• IoT
</></>
Amazon
Alexa
• Powering
voice-enabled
apps
• Alexa Skills
Kit
IT
Automation
• Policy engines
• Extending
AWS services
• Infrastructure
management

15. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
AmazonAPIGateway
Create a unified
API frontend for
multiple micro-
services
Authenticate and
authorize
requests to a
backend
DDoS protection
and throttling for
your backend
Throttle, meter,
and monetize API
usage by third-
party developers

16. APIGateway
Internet
Mobile apps
Websites
Services
AWS Lambda
functions
AWS
API Gateway
Cache
Endpoints on
Amazon EC2
Amazon
CloudWatch
monitoring
Amazon
CloudFront
Any other AWS
service
YOUR VPC
Endpoints in
Your VPC
Regional API endpoints
All publicly accessible
endpoints
AWS Lambda
functions

17. Serverlessweb applicationwithAPIGateway
API Gateway handles all your
application routing. It can
handle authentication and
authorization, throttling, DDOS
protection, and more.
Amazon S3
API Gateway
Lambda runs all the logic
behind your website and
interfaces with databases,
other backend services, or
anything else your site needs.
AWS Lambda
Amazon Simple Storage
Service (Amazon S3) stores
all of your static content: CSS,
JS, images, and more. You
would typically front this with a
CDN such as CloudFront.
Amazon
CloudFront

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Serverlessarchitectures
S3
bucket
object
Lambda
function
1. File put into bucket
2. Lambda invoked
Lambda
function
2. Lambda invoked
SNS
topic
1. Data published to a
topic
Data
1. Message inserted
into to a queue
message
Amazon
SQS
Lambda
function
3. Function
removes
message from
queue
2. Lambda polls
queue and
invokes function

19. © 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Serverlessarchitectures
Lambda
function
2. Lambda polls
stream
Amazon
Kinesis
Data Stream
1. Data published to a
stream
3. Amazon
Kinesis returns
stream data
Data
Lambda
function
1. Scheduled time
occurs
CloudWatch
Events
(time-based)
2. Lambda invoked

20. AWSStepFunctions
Serverless workflow management with zero
administration
• Makes it easy to coordinate the components
of distributed applications and
microservices using visual workflows
• Automatically triggers and tracks each step
and retries when there are errors, so your
application executes in order and as
expected
• Logs the state of each step, so when things
do go wrong, you can diagnose and debug
problems quickly
Task
Choice
Failure capture
Parallel Tasks

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AWSLambda releasehistory
2015 2016 2017 2018
?
*As of October 2018, does not include region launches

22. N E W !
Language
s
Lambda
support for
Ruby
+ Bring any Linux compatible language
runtime;
Powered by new Runtime API -
Codifies the runtime calling conventions
and integration points
Same technology powering Ruby
support in AWS Lambda
Bring any Linux compatible
language runtime
Custom Runtimes
+
AWSOPENSOURCE
o f f e r e d b y
o f f e r e d b y
o f f e r e d b y
o f f e r e d b y
PARTNERSUPPORTED

23. N E W !
Extend the Lambda execution
environment with any binaries,
dependencies, or runtimes
Lambda Layers
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
BUSINESS
LOGIC
LIB
A
LIB
B
Programming
Model
Before
BUSINESS
LOGIC
BUSINESS
LOGIC
BUSINESS
LOGIC
BUSINESS
LOGIC
LIB A LIB BAfter

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NowOpen–AWSStockholmRegion

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GetStartedat aws.amazon.com/serverless

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Thank you!
jarkkoh@amazon.com